Makes Bluetooth service discovery protocol (SDP) requests to a remote device.

To make SDP requests,

Construct a CSdpAgent object with the Bluetooth address of the remote device to query.

Set the classes of service that you want to query for. The classes have predefined UUIDs, which you specify with SetRecordFilterL().

Get results through NextRecordRequestL(). Information on services is stored as records, which can be queried in turn for attribute values for the service through AttributeRequestL().

A user of this class must implement MSdpAgentNotifier to receive the responses to queries.

Note that queries are asynchronous, although this is hidden in the API. The implication is that the interface functions that receive responses are only called when the thread's active scheduler can schedule handling of the completion of the query.

MSdpAgentNotifier